166138264 has 16 divisors (see below), whose sum is σ = 315453600. Its totient is φ = 82017312.

The previous prime is 166138249. The next prime is 166138289. The reversal of 166138264 is 462831661.

It is a happy number.

166138264 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130807 + ... + 132070.

It is an arithmetic number, because the mean of its divisors is an integer number (19715850).

Almost surely, 2^166138264 is an apocalyptic number.

It is an amenable number.

166138264 is a deficient number, since it is larger than the sum of its proper divisors (149315336).

166138264 is a wasteful number, since it uses less digits than its factorization.

166138264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262962 (or 262958 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 166138264 is about 12889.4632937140. The cubic root of 166138264 is about 549.7390100571.

The spelling of 166138264 in words is "one hundred sixty-six million, one hundred thirty-eight thousand, two hundred sixty-four".